Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult(simonwillison.net)
simonwillison.net
Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult
https://simonwillison.net/2025/Nov/24/claude-opus/
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More discussion: https://news.ycombinator.com/item?id=46037637